EASTERN PACIFIC · 2026 SEASON
Tropical Storm Iselle (2026)
Recorded track and intensity · 21 Aug 2026–27 Aug 2026
This storm’s record is provisional and may be revised as the archive is updated.
Drag to pan · Pinch or Ctrl/⌘ + scroll to zoom. Keyboard: plus or minus to zoom, arrow keys to pan, and 0 to show the full track.
69 mph / 111 km/h
24 Aug 2026 · tropical stage
Full archive record, including non-tropical stages if present
Along the recorded center positions
STORM HISTORY
Track and intensity summary
Iselle is listed in the Eastern Pacific basin for the 2026 season. Its archived track begins on 21 Aug 2026, 12:00 UTC at 10°N, 105°W. The first observation lists sustained winds of 20 knots. These dates describe the available observations, which may include stages before and after the tropical cyclone phase.
The highest recorded tropical-stage one-minute sustained wind is 60 knots (69 mph / 111 km/h), first recorded on 24 Aug 2026, 18:00 UTC at 18.9°N, 117.6°W. The minimum recorded tropical-stage central pressure is 988 hPa on 24 Aug 2026, 18:00 UTC.
The full record spans 132 hours and approximately 2,690 kilometers along the recorded center positions. The last recorded position is 22.8°N, 125.5°W on 27 Aug 2026, 00:00 UTC.
This summary is calculated from the NOAA IBTrACS archive and the NHC operational best track. The peak category, tropical storm, describes the storm’s peak recorded wind intensity, not its intensity at landfall or the severity of impacts at any location. Landfall times, damage and casualties have not been independently reviewed for this page.
QUICK ANSWERS
Iselle in brief
What was Tropical Storm Iselle’s highest wind speed?
60 kt (69 mph / 111 km/h), the highest one-minute sustained wind in its tropical stage, recorded on 24 Aug 2026, 18:00 UTC.
What category was Tropical Storm Iselle?
Tropical Storm Iselle is not recorded at hurricane strength on the Saffir–Simpson scale in this archive.
What was Tropical Storm Iselle’s lowest pressure?
988 hPa, the minimum central pressure recorded during its tropical stage, on 24 Aug 2026, 18:00 UTC.
When did Tropical Storm Iselle occur?
The archived track runs from 21 Aug 2026, 12:00 UTC to 27 Aug 2026, 00:00 UTC, with the tropical stage from 23 Aug 2026, 12:00 UTC to 27 Aug 2026, 00:00 UTC.
Where did Tropical Storm Iselle form?
In the Eastern Pacific basin, in the 2026 season. Its first recorded position is 10°N, 105°W on 21 Aug 2026, 12:00 UTC.
Did Tropical Storm Iselle make landfall?
No archived position places Tropical Storm Iselle’s center over land, but positions are six-hourly and a brief landfall can fall between them.
METHODOLOGY
Data sources and limitations
The map and summary are generated from NOAA’s IBTrACS v04r01 archive, with provisional positions from the NHC operational best track; post-season analysis revises them. Wind and category use US-agency records; minimum pressure is calculated during the tropical stage, with the archive’s pressure source retained. Categories refer to the Saffir–Simpson one-minute wind scale; local agencies may use different classifications. Coastlines use Natural Earth’s 1:10m land data.
Track distance adds great-circle distances between consecutive observations, excluding gaps over 12 hours. This track has no gaps over 12 hours. The line shows the storm’s center, not its size, rainfall or flood extent. Converted wind speeds are rounded to the nearest whole unit.
Archive retrieved · Live tracks fetched
NOAA IBTrACS archive · Field documentation
Sources & methodology